Please correct my grammar?

Before compare and contrast two artworks, I will anylized both works. I will start with ‘Marilyn Diptych’ by Andy Warhol. Andy Warhol is well known as Pop-art artist. He often portrayed popular household products and celebrities in silkscreen paintings. And he often used Mirros sameness, repetitions and branding in m media. ‘Marilyn Diptych’ is well representing of Andy Warhol’s key characteristics. It is all about famous actress Marilyn Monroe and he used silkscreen technique. And her face is repeating many times in one piece in color, and black and white. There is reason why Andy Wahol repeated Marilyn Monroe’s face so many times in color, and balck and white. ‘Marilyn Diptych’ was painted after Marilyn Monroe was dead. Andy Warhol was emphatized with her and he expressed his feeling in ‘Marilyn Diptych.’ Andy Warchol chose to repeated Marilyn Monroe’s face start with color and end with black and white to show absence and grief. And the black and white images seem film reel which represents about Marilyn Monroe’s carrier when she was alived. Black and white repeated images are getting clouded from left to right, this means how much we actually know about her.